Dynamo-electric machine.



J. B. WIARD. I DYNAMO ELECTRIC MACHINE.

- Patented J1111615,1909

APPLICATION FILED APR. 29, 1907.

Invehtor: John BWiar'dI oqttly Witnesses:

. To all whom it may concern:

have invented certain 'provements 1n. Dynamo-Electric Machines,

,, be understood by reference to 1; Fig. 3 showsa detail UNITED sr Es PATENT OFFICE.

JOHN B. WIARD, OF LYNN, MASSACHUSETTS, ASSIGNOR 'IO'GENERAL ELECTRIC COMPANY,

A CORPORATION OF NEW YORK.

DYNAMIC-ELECTRIC MACHINE.

Be it known that I, JOHN B. WIARD, a citizen'of the United States, residing at Lynn, county of Essex, State "of Massachusetts,

new and useful Imof which the following is a specification.

My machines provided with separate connectionrings or cables, as disclosed in my former ,patent No. 854,784, dated May 28, 1907.

As set forth in that patent, it is frequently desirable to arrange a machine, such as an induction motor, for operation on' two or more different voltages. This has been accomplished heretofore by making the primary winding of the motor with two or more circuits, which may be connected in series or in parallel. This, in the case of small motors, makes the connections at the ends of the coils bulky. Accordingly, in my former application Idescribed means forforming t e connections, which it may be desired to change, by a separate cable connected to the winding and comprising conductors arranged to make the desired connections; By sim ly removing one cable and substituting another satisfactorily arranged, the. motor circuits are changed in the required mannen.

My dpresent invention consists in an improve construction of the connection-ring or cable, and to that end comprises certain features which will be definitel pointed out in the appended claims, and w ich will best the accompanying drawings, in which I Figure 1 shows a side elevation, with the casing partly broken away, of an induction motor provided with a connection-ring or cable arranged in accordance with my invention; F igl 2 shows an end elevation of the same in cross-section on the line 22 of Fig. in elevation of the connection-ring; Fig. 4 shows a plan view of the connection-rhig with a portion of the covering removed; and Figs. 5 and 6 show cross-sections of the connection-ring at diiiers ent points in its length.

In the drawings, A represents the motor frame, which includes' the usual laminated structure, in which are mounted the coils B Specification of Letters Patent.

Application filed April 29, 1907.

invention relates to dynamo-electric,

Patented June 15, 1909. Serial No. 870,764.

D represents the separate connection-ring or cable by means of which the coils for the several'poles or phases of the stator are connected together. two fiat,. parallel annular strips (Z, which serve to support the conductors b, which are clam ed between the rings. 4 may e of insulating material, and are bound together by a suitable wrapping, as shown in the drawings. The ends of the conductors 1) project from the connection-ring D, and

preferably-pass through holes in one of the annular strips (1, as shown in Fig. 5; which construction assists in maintaining the conductors in their proper positions in the ring. The projecting ends of the conductors b are bent over the periphery of the connectionrin D, as is most clearly shown in Figs. 1 an 5, so that when these conductors are attached to the ends of the coils B, they serve to support the ring D in position. The joints between the conductors and the end of the coils, one ofwhich joints is shown at b in Fig. 5, may be made in any suitable manner, as by soldering and then taping. The rin D is also provided with terminal blocks It,

which may be bound to it by the wrapping,

as shown in Fig. 4, and which are adapted to receive the leads F, which connect the primary winding of the machine to the supply circuit.

The construction described facilitates assembling the conductors in the ring, and when completed produces a rigid and compact structure.

What I claim as new, and desire to secure by Letters Patent of the United States, is,

1. In adynamo-electric machine, a distributedwinding, and a separate connectionring or cable comprising an annular sup ort an( a plurality of electrically-indepen ent circumferentia ly extending conductors carried thereby independently establishing redetermined connections between the coi s of the windin I "2. In a dynamo-electric machine, a distributed winding, and a separate connectionrin or cable comprising an annular support an a luralit of electrically indepen ent circum erentia y extendin conductors carried by said support with t eir ends project: ing independently establishing re'determined connections between theco I of said winding.

In this ring are placed These strips (1 In a dynamo-electric machine, a distributed winding, and a separate connectionrin or cable comprising a support in the form of at parallel annular strips and circumferentially extending conductors bound between said strips with their ends projecting establishing predetermined connections between the coils of said winding.

4. In a dynamo-electric machine, a distributed winding, and a separate connectionrin or cable comprising a support in the form of IIat parallel annular strips bound together, and circumferentially extending conductors carried between said strips with their ends projecting through holes in one of said strips establishing predetermined connections between the coils ol' said winding.

5. In a dynamo -electric machine, a distributed Winding, and a separate connectionring or cable comprising an annular support and a plurality of independent circumferentially extending conductors carried by said support with their ends projecting establishing predetermined connections between the coils of said winding, said projecting ends being bent over the periphery of the ring so that when said ends are secured to the coils they serve to support said ring.

6. In a dynamo-electric machine, a dis tributed winding, and a separate connectionring or cable comprising a support in the form of flat parallel annular strips, bound together, and circuml'erentially extending conductors carried between said strips with their ends projecting through holes in one of said strips establishing tween the coi s of said winding, said projecting ends being bent over the periphery of the redetermined connections bering so that when said ends are secured to the coils they serve to so port said ring.

7. In a dynamo -e Iectric machine, a distributed winding, a separate connection-ring or cable comprising an annular support and a plurality of electrically independent circumt'erentially extending conductors carried thereby independently establishing predetermined connections between the coils of the winding, and terminal blocks secured to said ring adapted to receive leads from an external circuit.

8. In adynamo eelectric machine, a distributed winding, a separate connection-ring or cable comprising an annular support and a plurality of independent circulnl'erentially extending conductors carried by said support with their ends projecting independently establishing predetermined connections between the coils of said winding, and terminal blocks secured to said ring adapted to receive leads from an external circuit.

9. In a dynamo electric machine, a dis- .tributed winding, a separate connection-rn'ig orcable comprising a support in the form of fiat parallel annular strips and circumferentially extending conductors bound between said strips with their ends projecting establishing'predetermined connections between .the coils of said winding, and terminal blocks secured to said ring adapted to receive leads from an external circuit.

In witness whereof, I have hereunto set my hand this 26th day of April, 1907.

JOHN B. WIARD. Witnesses:

Arnx'. F. IVIACDONALD, JOHN A. MoMANUs, Jr. 

